83 sats \ 2 replies \ @wild_side 20 Sep \ parent \ on: 145 - what is special about this number? charts_and_numbers
Composite Number: 145 is not a prime number; it can be factored into 5×295×29.
Divisors: The divisors of 145 are 1, 5, 29, and 145 itself.
Deficient Number: The sum of its proper divisors (1 + 5 + 29 = 35) is less than the number itself, categorizing it as a deficient number.
Pentagonal Number: It is recognized as a pentagonal number for n=10n=10.
Indeed. Several valid answers. Cfr #693100
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Thanks
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